Date: 25 Sep 2001 18:54:49 -0700 From: swear@blarg.net (Gary W. Swearingen) To: Chip <chip@wiegand.org> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: FDISK Partition Editor Question Message-ID: <4ed74evhqu.74e@localhost.localdomain> In-Reply-To: <01092516402903.96094@chip.wiegand.org> References: <01092516402903.96094@chip.wiegand.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Chip <chip@wiegand.org> writes: > Name PType Desc Subtype Flags > ---------------------------------------------------- > - 6 unused 0 > ad0s1 3 FreeBSD 165 C > - 6 unused 0 > > Now when I choose to Set Bootable, I am assuming I do that to the ad0s1 > partition, right? What are the other two partitions? And why are there 3 of > them anyway? I choose the option to use the entire disk afterall. I think it's more accurate to say that there is only 1 primary partition (slice) and 2 unused disk areas. I suppose that one could have as many as 4 primary partitions and 5 unused disk areas. I'm suprised that doesn't say something about C/H/S and sizes. If it did, I think you'd see that there's one track (one head, one cyl) reserved for the MBR and nothing else I know about. FreeBSD seems to always use track boundaries as slice boundaries. That doesn't explain the last type-6 area, unless maybe you asked for a certain number of cylinders instead of using the remaining number of bytes (which would be a multipe of one track), and maybe it left the last cylinder (or cylinder minus a track?) unused. I've never see that, though I always see the first unused area. BTW, a similar thing goes on with the secondary partitions (BSD "partitions") within the primary partitions. The primary partition has a boot record and something like 16 sectors of other disklabel+ secondary boot code and, IIRC, unused areas to make some secondary partition and track (or cylinder?) boundaries line up. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4ed74evhqu.74e>